Future perspective on MOF glass composite thin films as selective and functional membranes for molecular separation

Metal Organic Frameworks (MOFs) have been recently found to exist in a more processible liquid and glassy phase. These glassy MOFs have been shown to exhibit functional properties either in their native glassy form or when composited with other functional materials. The capability of MOF glass to be easily tailored similar to its crystalline form, while being able to form a continuous film with limited intergrain boundaries makes it a promising candidate for a selective membrane material. However, even with its high processibility, limited studies have been performed on this material in a thin film format. This perspective highlights the properties of currently studied MOF glass and its composite, as well as existing studies on MOF glass membranes. Views on possible future exploration pathways for this material in the form of membrane thin films, such as possible new MOF glass composite membrane configuration and new applications, are also provided.